state

Type Members

1. case class AddHost(server: HostLocation) extends DynamicClusterMessage with Product with Serializable

   

2. class Candidate extends NodeRole

   

3. case class ClusterPeer(matchIndex: LogIndex, nextIndex: LogIndex) extends Product with Serializable

   

4. trait ClusterProtocol extends AnyRef

   

   Represents a view of the cluster to a RaftNode.

   Represents a view of the cluster to a RaftNode. This is passed in, allowing the RaftNode (whos responsibility is to maintain its own state) to communicate with the rest of the cluster and control its timeouts

5. sealed trait DynamicClusterMessage extends AnyRef

   

6. case class DynamicHostService(config: RaftConfig, clusterNodesFile: Path) extends StrictLogging with Product with Serializable

   

   Provides a handler onDynamicClusterMessage for Raft DynamicClusterMessage append messages

7. class ElectionCounter extends AnyRef

   

8. trait InitialisableTimer extends RaftTimer

   

   Timers are tricky, as they need to be given to a ClusterProtocol, but the cluster protocol needs to reference nodes, which the timers in turn need to have a reference to.

   Timers are tricky, as they need to be given to a ClusterProtocol, but the cluster protocol needs to reference nodes, which the timers in turn need to have a reference to.

   Because of this circular reference, we make an 'initializable' timer, which is a valid RaftTimer, but resets won't take affect until it has been initialized.

9. case class Leader(clusterViewByNodeId: Map[NodeId, ClusterPeer]) extends NodeRole with Product with Serializable

   

10. trait Log[Command] extends AnyRef

    

    Represents the commit log

    Represents the commit log

    Command

    the messages we're saving to the log

11. case class LogEntry[Command](term: Term, index: LogIndex, command: Command) extends Product with Serializable

    

12. type LogIndex = Int

    

13. type NodeId = String

    

14. sealed trait NodeRole extends AnyRef

    

15. case class NotTheLeaderException(currentLeader: Option[NodeId], roleId: NodeId, currentState: String, clusterSize: Int) extends Exception with Product with Serializable

    

16. trait PersistentState[T] extends AnyRef

    

17. class RaftConfig extends ServerConfig

    

18. trait RaftNode[T] extends RaftEndpoint[T]

    

    A RaftNode encapsulates (or should encapsulate) _any_ raft implementation.

    A RaftNode encapsulates (or should encapsulate) _any_ raft implementation.

    The RaftEndpoint is the API representation for things which want to send raft messages to a node, but a 'RaftNode' can also accept reply messages

19. case class RaftState[T](role: NodeRole, persistentState: PersistentState[T]) extends Product with Serializable

    

20. class RaftSystem[T] extends AnyRef

    

    Pulls together the different components of a Raft System as seen by a raft node.

21. trait RaftTimer extends AutoCloseable

    

22. case class RemoveHost(server: HostLocation) extends DynamicClusterMessage with Product with Serializable

    

23. case class Term(t: Int) extends Ordered[Term] with Product with Serializable